Volume Converter

Convert volume between metric (mL, L, m³) and US customary (cup, pint, quart, gallon, fl oz, tbsp, tsp) units.

Reviewed by the WorldCalcs team · Methodology · Last reviewed: June 2026

Result

4.2267528

1 (l) = 4.2267528 (us_cup)

US and UK/imperial units differ — values above are US customary.

All units

1 l converted into every supported unit.

UnitValue
Milliliter (mL)1 000
Liter (L)1
Cubic meter (m³)0.001
US teaspoon202.88414
US tablespoon67.628045
US fluid ounce33.814023
US cup4.2267528
US pint2.1133764
US quart1.0566882
US gallon0.26417205

What is a volume converter?

A volume converter changes a measurement of capacity between units such as millilitres, litres, cups, pints and gallons. Note that US and imperial (UK) units of the same name differ, so check which system you need.

How it works

Each unit has a fixed ratio to the litre. The converter turns your value into litres, then into the unit you choose. US customary defining values are exact: 1 US gallon = 3.785411784 L and 1 US cup = 236.5882365 mL.

All calculations happen in your browser. Nothing is sent, stored, or tracked.

Results are estimates and may contain errors — for general information only, not professional advice. Always verify before relying on them. Disclaimer

How to use

Type a value, pick the unit you have it in and the unit you want it in. The result updates instantly.

All conversions go through liters using exact factors (1 US gallon = 3.785411784 L, 1 US cup = 0.2365882365 L).

Note: the customary units here are US customary. UK/imperial cups, pints and gallons are different sizes — don't mix the two systems in a single recipe.

Frequently asked questions

Are these US or UK gallons?+

These are US customary units. 1 US gallon = 3.785411784 liters. The UK/imperial gallon is different (about 4.546 liters) — don't confuse the two when following a recipe.

How many ml in a US cup?+

1 US cup = 236.5882365 mL — commonly rounded to 240 mL in nutrition labeling, but the exact value is used here.

What about cubic meters?+

1 m³ = 1,000 liters. Useful for tanks, pools, or anything sized in metric volume.

How many millilitres are in a US cup?+

Exactly 236.5882365 mL (often rounded to 237 mL).

How many litres are in a US gallon?+

Exactly 3.785411784 L.

Is a US gallon the same as a UK gallon?+

No. A UK (imperial) gallon is about 4.546 L — larger than the US gallon.

How many cups are in a litre?+

About 4.2267528 US cups.